19984668

素因数分解:

$2^2\times 3^1\times {\mathrm{11}}^1\times {\mathrm{101}}^1\times {\mathrm{1499}}^1$

素因数の和:1618

約数の個数: 48

約数和(自身を含む): 51408000

約数和(自身を除く): 31423332

約数列:

[1, 2, 3, 4, 6, 11, 12, 22, 33, 44, 66, 101, 132, 202, 303, 404, 606, 1111, 1212, 1499, 2222, 2998, 3333, 4444, 4497, 5996, 6666, 8994, 13332, 16489, 17988, 32978, 49467, 65956, 98934, 151399, 197868, 302798, 454197, 605596, 908394, 1665389, 1816788, 3330778, 4996167, 6661556, 9992334, 19984668]

約数ペア:

[(1, 19984668), (2, 9992334), (3, 6661556), (4, 4996167), (6, 3330778), (11, 1816788), (12, 1665389), (22, 908394), (33, 605596), (44, 454197), (66, 302798), (101, 197868), (132, 151399), (202, 98934), (303, 65956), (404, 49467), (606, 32978), (1111, 17988), (1212, 16489), (1499, 13332), (2222, 8994), (2998, 6666), (3333, 5996), (4444, 4497)]